Form-fitting device for a hearing aid



FIG. 1 is a front elevational view of a form-fitting device for ahearing aid showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view, the right side view being a mirror imagethereof; and,

FIG. 4 is a top plan view thereof; the bottom plan view being a mirrorimage thereof.

The ornamental design for a form-fitting device for a hearing aid, as shown and described. 